A: aside
from the two most obvious factors —how large the item required and how busy the workshop at the time —turnaround is contingent on the availability of
the desired leather:-

upholstery leathers are generally readily available and, in the majority
of instances where these are to be utilized, the item should be completed
within a four-to-five week period

with anything that uses
cowhide,
turnaround will be as mentioned above as long as the hides are either in the workshop's stockpile
or can be sourced in the cape town area; for hides that need to be sourced
from somewhere else in south africa,
add a further week or two;
for hides that need to be ordered from brazil,
add around six weeks at the very least